FPS & Monitor Refresh Rate Checker
Check your display refresh rate and real-time frames per second. Verify your monitor is running at its rated Hz.
Runs in your browser. No data leaves your device.
Frequently Asked Questions
How does the FPS Monitor work?
The tool runs a requestAnimationFrame callback that records the timestamp of each frame. It counts how many callbacks fire within each one-second window to compute the current FPS. The difference between consecutive frame timestamps gives frame time in milliseconds. Min, max, and average FPS are tracked across the session. This measures your browser's actual rendering rate, which is bounded by your monitor's refresh rate and system load.
Why is my FPS lower than my monitor's refresh rate?
Your browser may be capping frame rate, your system may be under load, or power saving mode may limit refresh rate. Check that hardware acceleration is enabled in your browser settings.
What FPS should I expect?
A standard monitor runs at 60 FPS. Gaming monitors run at 120, 144, or 240 FPS. The tool should show a number close to your monitor's rated refresh rate when your system is not under heavy load.